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Re: pine or spruce for strips?
By:Lennart Berlin
Date: 7/7/1999, 6:37 am
In Response To: pine or spruce for strips? (Jan Gunnar Moe)

> Seems like only wood available locally without exlosive costs is pine and
> spruce. (Where I live most houses are built using pine or spruce...)

> Will pine and spruce bend in a nice manner if used for strips in kayak (or
> kayak deck with ply hull)?

> Other drawbacks if compared with cedar or redwoood?

> Jan Gunnar

The Swedish Institute for Wood Technology Research (Trätek) has written a small book (Träfakta) about different types of wood. I will give you av very short summary about pine (Pinus silvestris), spruce (Picea abies) and Califoria Redwood (Sequoia sempervirens).

For a perfect piece of wood, pine is a little bit stronger than spruce. But for practical use, for instance building a house, they are equal. Both are stronger than California Redwood.

The center part is lighter and a little weaker than the outer part.

For pine the density of the top log is about 10% less than the root log. Not so for spruce.

Some density figures (kg/cubicmeter):

moisture 12%

Pine 480 - 530

Spruce 390 - 480

Redwood 350 - 450

The Swedish kayak constructor Björn Thomasson has written a book in Swedish: Kanotboken. He recommend spruce. I quote and translate: "Pine cuold be used but makes the boat heavier without any advantages."

Lennart Berlin

Messages In This Thread

pine or spruce for strips?
Jan Gunnar Moe -- 7/5/1999, 6:37 am
Re: pine or spruce for strips?
Lennart Berlin -- 7/7/1999, 6:37 am
Re: pine or spruce for strips?
Jan Gunnar Moe -- 7/7/1999, 8:04 am
Re: pine or spruce for strips?
Nick Schade -- 7/5/1999, 9:15 am
Spruce for strips, nice cost
Jan Gunnar Moe -- 7/5/1999, 9:50 am
Re: Spruce for strips, nice cost
Hans Friedel -- 7/5/1999, 5:16 pm
Re: Spruce for strips, nice cost
Jay Babina -- 7/6/1999, 9:29 am
Grain vs weigth
Jan Gunnar Moe -- 7/6/1999, 10:41 am